textproduct: Quad Cities

KEY MESSAGES

- The end of the work week will feature temperatures below normal, with mostly cloudy skies. A light breeze will be felt going into the evening, but will otherwise be a pleasant evening throughout.

- Temperatures start to trend upwards through the Memorial Day Weekend, with above normal temperatures in store for us. Memorial day currently looks to be a beautiful day, with mostly clear skies and temperatures in the low-mid 80s.

- Spotty precipitation chances will be seen through the weekend, with a pattern change by the middle of next week increasing moisture throughout, prompting increasing chances for precipitation midweek.

SHORT TERM /THROUGH SATURDAY NIGHT/

Issued at 151 PM CDT Fri May 22 2026

Wave passing well northwest of the area will have some weak bouts of vorticity passing through the area this afternoon and evening. Moisture remains quite limited throughout the area, with overall forcing being weaker. Thus, precipitation chances will be limited, but nonzero. Best chances will be for areas west of the Mississippi River, but should largely equate to a drizzle or light rain shower. Low accumulation is expected, if any. Rather, a gloomy looking afternoon and evening will be ahead of us, owing to mostly cloudy skies remaining and cooler than normal temperatures. With mostly cloudy skies remaining through the night, temperatures will moderate in the mid 50s for much of the area with a light and variable breeze.

Tomorrow, upper level flow will remain southwesterly as another wave emerges in lee of the Rockies. This will be another weaker wave, coming through Saturday PM, with a little more WAA ahead of it. As a result, temperatures and moisture will increase on Saturday. Temperatures will increase into the mid-upper 70s, with higher readings along/east of the Mississippi River. Overall, moisture will remain limited, yet sufficient for showers and isolated storms as the approaching wave passes through Saturday PM. At this time, we are not expecting a widespread heavy rainfall. Rather, isolated-scattered showers/storms moving in along the passing/dying cold front Saturday afternoon and evening, with chances generally between 20-40%. Severe weather is not expected at this time. These will be quick to move through any given location. Thus, much of the area will see a mostly dry day, with a mix of clouds/sun and a light breeze.

LONG TERM /SUNDAY THROUGH FRIDAY/

Issued at 151 PM CDT Fri May 22 2026

Behind the passing wave Saturday night into Sunday, we will fall under zonal flow aloft through Monday. Low level flow will be weak through Sunday, but start to increase out of the southwest through Monday. This will allow for temperatures to increase above seasonal normals, with much of the area progged to see temperatures in the low-mid 80s. Memorial day is currently looking to be quite the pleasant day, with mostly clear skies, light southerly winds, and temperatures increasing into the mid 80s.

Tuesday onward, strong upper ridging will develop over the Central US. With this, we will see some blocking take place as the ridge gets held in place from upstream and downstream trofs. Early in the week, we will generally see a pseudo-Rex Block take shape, but will transition into an Omega Block. Midweek will be the best chance for precipitation, as we fall under that blocking transition. A cutoff low from the south will slowly meander north, bringing the chance for precipitation to parts of the area. Global models all generally bring precipitation to our south, generally along/south of Highway 34. Although, much can change from now until then. After this system dissipates and the Omega Block takes shape during the second half of the week, a surface high pressure will settle over the Great Lakes Region. Low level easterly flow will result, which should largely keep precipitation chances limited. Otherwise, temperatures will remain near to above seasonal normals.

AVIATION /00Z TAFS THROUGH 00Z SUNDAY/

Issued at 640 PM CDT Fri May 22 2026

Primary concern is the development of a scattered convection Saturday late morning and afternoon ahead of a cold front. I have gone with a PROB30 mention 16z-21z across the terminals for showers. Can't rule out lightning, but uncertainty with amount of instability and coverage of TSRA precludes mention at this time. Otherwise, predominantly VFR conditions anticipated, but likely some pockets of MVFR ceilings on Saturday ahead of the front based on increasing low level RH and LCLs around 2500ft agl. Pockets of MVFR to localized IFR visibility are also possible with any showers and isolated storms. Easterly winds around 10 kt will turn light and variable by Saturday AM ahead of the front, then veer to westerly with the frontal passage Saturday afternoon.

DVN WATCHES/WARNINGS/ADVISORIES

IA...None. IL...None. MO...None.